The is an expansion type anchor used to anchor a fixture into solid concrete. The wedge anchor is made of two separate pieces permanently pre-assembled into a single unit. The main piece is a carbon steel rod that is threaded for a portion of its length. The un-threaded portion of the rod has a conical space that tapers outward back to the full diameter of the rod. The second piece of the wedge anchor is a steel clip that is permanently assembled around the conical section of the rod. Each wedge anchor also requires a nut and washer to complete the installation.

The wedge anchor is installed through the fixture into a pre-drilled hole. As the anchor is hammered into the hole, the clip is recessed in the gap of the conical space, allowing the anchor to penetrate the hole. The anchor is set by tightening the nut. As the nut is tightened, the rod is pulled up, making the clip move outward on the tapered space, thus wedging it against the wall of the hole. The wedge anchor, once installed, cannot be removed without damage to the surrounding concrete.

The wedge anchor can only be used in solid concrete, and not in brick or block base material. The can be used in a variety of applications, from light duty to heavy duty. Some common applications for the wedge anchor are fastening pallet racks to concrete, installing railing, mounting machinery to a floor, attaching framing to a concrete foundation.the list goes on and on.